Mitutoyo 611208-541 Steel Gage Block 8 Inches Grade AS-1

Product Description

The MITUTOYO 611208-541 is a rectangular steel gage block with a nominal length of 8 inches and an Accuracy Grade AS-1 classification per ASME standards. Gage blocks are precision reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances on the shop floor or in a metrology lab. This block is machined from steel to tight flatness and parallelism tolerances required by the AS-1 grade specification. It ships with a Certificate of Inspection, confirming that the block has been measured and documented to meet stated accuracy requirements. Machinists, metrologists, and quality technicians rely on this type of block for traceable measurement reference work.

This gage block is suited for industrial metrology applications including instrument calibration, fixture setup, and precision layout work. The 8-inch nominal size makes it appropriate for applications requiring a longer reference standard, such as setting large comparators or verifying the calibration of height gauges and long-range measuring tools. It is used in both manufacturing environments and calibration laboratories.

Key Features

• Nominal length of 8 inches with 5-decimal precision designation (8.00000 inches)
• Accuracy Grade AS-1 per ASME standards for tight dimensional tolerance compliance
• Steel construction for durability and long-term dimensional stability
• Includes Certificate of Inspection for traceable documentation
• Rectangular form factor for compatibility with standard gage block accessories and holders

Compatibility

Designed as an OEM-style precision reference standard compatible with standard gage block accessories, holders, and wringing sets used in industrial metrology and calibration applications.

Installation Notes

Gage blocks should be handled by metrology technicians or qualified calibration personnel following established measurement standards practices. Keep blocks clean and lightly oiled when not in use to prevent corrosion and protect lapped surfaces. Never drop or strike a gage block, as impact damage will compromise surface flatness and invalidate the accuracy grade. Store in the provided case when not in service and re-certify on a schedule consistent with your quality management system requirements.